Optical storage apparatus and control chip for accessing an optical disc and method thereof

Abstract

An optical storage apparatus includes an optical pickup head, a drive module, a spherical aberration compensator, and a controller module. The drive module is coupled to the optical pickup head for performing a predetermined operation associated with the optical pickup head. The spherical aberration compensator is coupled to the optical pickup head for performing a spherical aberration compensation upon the optical pickup head. The controller module is coupled to the drive module and the spherical aberration compensator for controlling the drive module to perform the predetermined operation during a first period of time and the spherical aberration compensator to perform the spherical aberration compensation during a second period of time. The first period of time overlaps the second period of time.

1 . An optical storage apparatus for accessing an optical disc, the optical storage apparatus comprising:
 an optical pickup head, for generating a light spot onto the optical disc;   a drive module, coupled to the optical pickup head, for performing a predetermined operation associated with the optical pickup head;   a spherical aberration compensator, coupled to the optical pickup head, for performing a spherical aberration compensation upon the optical pickup head; and   a controller module, coupled to the drive module and the spherical aberration compensator, for controlling the drive module to perform the predetermined operation during a first period of time and the spherical aberration compensator to perform the spherical aberration compensation during a second period of time, wherein the first period of time overlaps the second period of time.   
   
   
       2 . The optical storage apparatus of  claim 1 , wherein the drive module comprises a moving mechanism, and the controller module controls the moving mechanism to perform the predetermined operation for seeking a target track on the optical disc. 
   
   
       3 . The optical storage apparatus of  claim 2 , wherein the optical disc has a first information layer and a second information layer, and the predetermined operation is to seek the target track on the second information layer from a current track on the first information layer. 
   
   
       4 . The optical storage apparatus of  claim 1 , wherein the drive module comprises a moving mechanism, and the controller module controls the moving mechanism to perform the predetermined operation for moving a sled on which the optical pickup head is disposed. 
   
   
       5 . The optical storage apparatus of  claim 1 , wherein the drive module comprises a tilt compensator, and the controller module controls the tilt compensator to perform the predetermined operation for calibrating a tilt angle between the optical pickup head and the optical disc. 
   
   
       6 . A control chip for controlling an optical pickup head to access an optical disc, the control chip comprising:
 a drive module, for performing a predetermined operation associated with the optical pickup head;   a spherical aberration compensator, for performing a spherical aberration compensation upon the optical pickup head; and   a controller module, coupled to the drive module and the spherical aberration compensator, for controlling the drive module to perform the predetermined operation during a first period of time and the spherical aberration compensator to perform the spherical aberration compensation during a second period of time, wherein the first period of time overlaps the second period of time.   
   
   
       7 . The control chip of  claim 6 , wherein the drive module comprises a moving mechanism, and the controller module controls the moving mechanism to perform the predetermined operation for seeking a target track on the optical disc. 
   
   
       8 . The control chip of  claim 7 , wherein the optical disc has a first information layer and a second information layer, and the predetermined operation is to seek the target track on the second information layer from a current track on the first information layer. 
   
   
       9 . The control chip of  claim 6 , wherein the drive module comprises a moving mechanism, and the controller module controls the moving mechanism to perform the predetermined operation for moving a sled on which the optical pickup head is disposed. 
   
   
       10 . The control chip of  claim 6 , wherein the drive module comprises a tilt compensator, and the controller module controls the tilt compensator to perform the predetermined operation for calibrating a tilt angle between the optical pickup head and the optical disc. 
   
   
       11 . An optical storage apparatus for accessing an optical disc, the optical storage apparatus comprising:
 an optical pickup head, for generating a light spot onto the optical disc;   a drive module, coupled to the optical pickup head, for performing a predetermined operation associated with the optical pickup head;   a compensator, coupled to the optical pickup head, for performing a compensation upon an optical characteristic of the optical pickup head; and   a controller module, coupled to the drive module and the compensator, for controlling the drive module to perform the predetermined operation during a first period of time and the compensator to perform the compensation upon an optical characteristic of the optical pickup head during a second period of time, wherein the first period of time overlaps the second period of time.   
   
   
       12 . The optical storage apparatus of  claim 11 , wherein the drive module comprises a moving mechanism, and the controller module controls the moving mechanism to perform the predetermined operation for seeking a target track on the optical disc. 
   
   
       13 . The optical storage apparatus of  claim 12 , wherein the optical disc has a first information layer and a second information layer, and the predetermined operation is to seek the target track on the second information layer from a current track on the first information layer. 
   
   
       14 . The optical storage apparatus of  claim 11 , wherein the drive module comprises a moving mechanism, and the controller module controls the moving mechanism to perform the predetermined operation for moving a sled on which the optical pickup head is disposed. 
   
   
       15 . The optical storage apparatus of  claim 11 , wherein the drive module comprises a tilt compensator, and the controller module controls the tilt compensator to perform the predetermined operation for calibrating a tilt angle between the optical pickup head and the optical disc. 
   
   
       16 . A method of driving an optical pickup head utilized for accessing an optical disc, the method comprising:
 performing a predetermined operation upon an optical pickup head during a first period of time; and   performing a spherical aberration compensation upon the optical pickup head during a second period of time, wherein the first period of time overlaps the second period of time.   
   
   
       17 . The method of  claim 16 , wherein the predetermined operation is to seek a target track on the optical disc. 
   
   
       18 . The method of  claim 17 , wherein the optical disc has a first information layer and a second information layer, and the predetermined operation is to seek the target track on the second information layer from a current track on the first information layer. 
   
   
       19 . The method of  claim 16 , wherein the predetermined operation is to move a sled on which the optical pickup head is disposed. 
   
   
       20 . The method of  claim 16 , wherein the predetermined operation is to calibrate a tilt angle between the optical pickup head and the optical disc.